Granite Jaw Crusher

What Exactly Is a Granite Jaw Crusher？

A Granite Jaw Crusher is the first-stage machine in a quarry crushing line. It reduces blasted granite rock down to a size a cone crusher can accept. Granite’s compressive strength typically ranges from 120–300 MPa, with quartz content of 19–45%, making it one of the most abrasive rocks to crush.This article covers: how to select the right model for your feed size and capacity, real operating data from quarries in Sweden, Norway, Brazil, and Kazakhstan, and the wear-part life you can expect when crushing granite versus limestone.

This equipment is typically positioned at the very front of the production process, responsible for reducing blasted large granite blocks to particle sizes suitable for subsequent secondary and tertiary crushing stages. Granite Jaw Crusher is specifically engineered for hard rocks with compressive strengths exceeding three hundred megapascals, demonstrating particularly outstanding performance when processing difficult-to-break materials like granite and basalt.

Granite Jaw Crusher Video Showcase

How Does a Granite Jaw Crusher Operate？

Power transmission pathway: Motor → belts and pulleys → eccentric shaft → moving jaw reciprocating motion. When the moving jaw approaches the fixed jaw, granite in the crushing chamber is compressed, split, and bent until it fractures.

What this means for granite specifically: Crushing force concentrates at the jaw plate tooth peaks. When quartz content exceeds 25%, local stress at these tooth peaks can exceed 1,200 MPa — far above granite’s bulk compressive strength.This is why jaw plate wear is faster on granite than on limestone. One practical rule: keep feed size within 80–85% of the feed opening width. At a UK quarry (GF Job), optimizing the tooth profile and controlling feed size extended single-set jaw plate life from 20,000–30,000 tonnes to 50,000–55,000 tonnes.

Power transmission pathway: The rotational motion output from the motor is transferred via belts and pulleys to the eccentric shaft, whose eccentric structure converts rotational motion into the reciprocating swinging motion of the moving jaw

Types of crushing forces applied: As the moving jaw approaches the fixed jaw, the granite material primarily experiences compressive stress, accompanied by shear stress and bending stress generated between material layers

Discharge mechanism: During the retreat of the moving jaw, the crushing chamber volume increases, allowing the already crushed material to discharge by gravity through the discharge opening, completing one working cycle

Operational cycle characteristics: This intermittent squeezing and releasing cycle repeats continuously, enabling Granite Jaw Crusher to process large quantities of granite raw material in a sustained manner

Material breakage principle: This equipment essentially applies compressive force to the material until its internal stress exceeds the material's own compressive strength, causing fracture

Design considerations for specific conditions: Given the high hardness of granite, Granite Jaw Crusher incorporates a relatively large crushing ratio and robust structural rigidity in its design to ensure stable operation when processing such hard materials

Which Granite Jaw Crusher Series Should You Choose？

PE Series — Coarse Crushing

PE series granite jaw crushers have a larger feed opening and are designed for raw blasted granite. Common models for quarry primary crushing include PE600×900, PE750×1060, and PE900×1200. Best for fixed quarry lines with feed sizes up to 700–900 mm.

PEX Series — Secondary/Fine Crushing

PEX series machines are not primary crushers. They reprocess coarsely crushed material to meet downstream particle size requirements. Best for producing 20–60 mm aggregate after primary crushing.

CJ/HJ Series — Heavy-Duty Continuous Operation

For quarries running 24-hour shifts with highly abrasive granite feed. The deep V-shaped chamber accepts feed sizes up to 1,300 mm without pre-crushing. Choose this series when wear life and uptime matter more than initial purchase price.

Electric vs. Diesel

Electric-powered granite jaw crushers are for fixed sites with grid power. Diesel-powered versions carry their own generator set and suit mobile operations where power supply is constrained.

Decision Rule for Granite Quarry Selection

If feed size exceeds 600 mm, prioritize a heavy-duty series. If budget is limited and feed size is under 500 mm, the PE series offers the best value. The PEX series is a secondary-stage machine, not a primary crusher. For 500 t/h granite primary crushing, a PE900×1200 or CJ series model is the realistic starting point.

Why Choose a Granite Jaw Crusher？

Granite Jaw Crusher possesses multiple outstanding performance characteristics in the field of hard rock crushing, making it the preferred equipment for granite processing. The overall advantages of this equipment are reflected in aspects such as structural design, maintenance convenience, feed adaptability, discharge adjustment flexibility, wear parts service life, and long-term operational economy.

Structural design aspect: Granite Jaw Crusher features a relatively simple overall structure with compact connections between components, making routine inspection and maintenance work more convenient and helping to reduce equipment downtime

Feed handling capability: The relatively deep crushing chamber of this equipment can accommodate larger-sized granite raw materials, reducing the need for pre-crushing stages

Discharge adjustment functionality: Granite Jaw Crusher offers a wide adjustment range for the discharge opening, allowing users to flexibly control output particle sizes according to actual production requirements to suit different downstream process needs

Wear parts service life: Granite Jaw Crusher employs high-manganese steel jaw plates as the primary wear-resistant components, providing a relatively long service life when dealing with strongly abrasive materials like granite

Operational economy performance: The operating costs of this equipment remain relatively controllable, with lower energy consumption and maintenance frequency helping users achieve long-term economic benefits

Technical Parameter Overview of Granite Jaw Crusher

The technical parameters of Granite Jaw Crusher vary across different equipment models, primarily covering feed opening dimensions, maximum feed particle size, discharge opening adjustment range, processing capacity, motor power, and overall machine weight. Different specifications of Granite Jaw Crusher are matched with motors of varying power ratings, ranging from approximately five kilowatts up to over two hundred kilowatts.

Model	Feed Opening	Max Feed Size(mm)	Discharge Range(mm)	Capacity(t/h)	Motor Power(kW)	Weight(t)
PE-150×250	150×250	125	10-40	1-3	5.5	0.8
PE-200×300	200×300	180	15-50	2-6	7.5	1.2
PE-250×400	250×400	210	20-60	5-20	15	2.8
PE-400×600	400×600	350	40-100	15-60	30	6.5
PE-500×750	500×750	425	50-120	30-80	45	10.5
PE-600×900	600×900	500	65-160	50-120	55	15.5
PE-750×1060	750×1060	630	80-180	80-200	90	26.0
PE-800×1060	800×1060	680	100-200	100-240	110	28.5
PE-870×1060	870×1060	750	120-220	120-280	132	30.5
PE-900×1200	900×1200	750	150-250	150-350	160	45.0
PE-1000×1200	1000×1200	850	180-280	180-400	180	50.0
PE-1200×1500	1200×1500	1020	200-350	250-500	220	78.0
PEX-150×750	150×750	120	10-40	5-15	15	3.2
PEX-250×750	250×750	210	15-50	10-30	22	4.5
PEX-250×1000	250×1000	210	15-55	15-40	30	6.0
PEX-250×1200	250×1200	210	15-60	20-50	37	7.5
PEX-300×1300	300×1300	250	20-65	25-60	55	10.0

Core Structure Analysis of Granite Jaw Crusher

The main structure of Granite Jaw Crusher consists of key components including the frame, eccentric shaft, moving jaw, fixed jaw, jaw plates, toggle plate, and adjustment device. Each component has a distinct function and works in coordination with others to collectively ensure the stability and reliability of the equipment when crushing high-hardness granite materials.

Frame: load-bearing foundation, fabricated from high-quality steel plates via welding or casting, with sufficient rigidity and strength to withstand impact loads from granite crushing

Moving jaw and fixed jaw: direct actuators of the crushing action, with replaceable jaw plates made of high-wear-resistant manganese steel to cope with intense surface wear from granite materials

Eccentric shaft: power transmission core, its precision and strength directly affect operational stability and crushing efficiency of Granite Jaw Crusher

Toggle plate: performs power transmission and serves as overload protection when encountering uncrushable objects, an important safety component of Granite Jaw Crusher

What Application Scenarios Suit a Granite Jaw Crusher？

Granite Jaw Crusher is widely applied across various industrial scenarios that require processing granite materials. This equipment plays a critical role in fields such as mining, construction aggregate production, transportation infrastructure construction, and water conservancy and hydropower projects.

Mining field: Granite Jaw Crusher is used to crush blasted large granite ores to particle sizes suitable for transportation and subsequent processing

Construction aggregate production: Granite Jaw Crusher processes granite raw materials into crushed stone aggregates that meet the requirements for concrete and asphalt mixtures

Road and railway construction: In road and railway construction projects, Granite Jaw Crusher provides granite crushed materials that meet specifications for subgrade filling and track ballast placement

Water conservancy and hydropower engineering: In water conservancy and hydropower projects, Granite Jaw Crusher also undertakes the task of processing granite into concrete aggregates

Our Manufacturing Advantages for Granite Jaw Crusher

In the manufacturing process of Granite Jaw Crusher, we place emphasis on quality control at every process detail. From raw material inspection to complete machine testing, from core component machining to after-sales technical support, we provide users with service coverage throughout the entire equipment lifecycle.

Raw material quality control: Starting from incoming raw material inspection, we conduct rigorous testing on each batch of steel and castings to ensure that the materials used for manufacturing Granite Jaw Crusher frames and key components meet design standards

Factory testing system: Our Granite Jaw Crusher undergoes complete machine no-load trial operation and load simulation testing before leaving the factory to verify operational stability and crushing performance

Wear parts process optimization: To address the wear resistance requirements of Granite Jaw Crusher under high-intensity operating conditions, we select high-grade manganese steel for jaw plate production and optimize heat treatment processes to enhance surface hardness and impact resistance

Personalized selection support: Our technical team can assist users in selecting appropriate Granite Jaw Crusher models and configuration schemes based on the provided granite material characteristics and production capacity requirements